28172820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1901}}^1$

素因数の和:1945

約数の個数: 96

約数和(自身を含む): 89470080

約数和(自身を除く): 61297260

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 19, 20, 26, 30, 38, 39, 52, 57, 60, 65, 76, 78, 95, 114, 130, 156, 190, 195, 228, 247, 260, 285, 380, 390, 494, 570, 741, 780, 988, 1140, 1235, 1482, 1901, 2470, 2964, 3705, 3802, 4940, 5703, 7410, 7604, 9505, 11406, 14820, 19010, 22812, 24713, 28515, 36119, 38020, 49426, 57030, 72238, 74139, 98852, 108357, 114060, 123565, 144476, 148278, 180595, 216714, 247130, 296556, 361190, 370695, 433428, 469547, 494260, 541785, 722380, 741390, 939094, 1083570, 1408641, 1482780, 1878188, 2167140, 2347735, 2817282, 4695470, 5634564, 7043205, 9390940, 14086410, 28172820]

約数ペア:

[(1, 28172820), (2, 14086410), (3, 9390940), (4, 7043205), (5, 5634564), (6, 4695470), (10, 2817282), (12, 2347735), (13, 2167140), (15, 1878188), (19, 1482780), (20, 1408641), (26, 1083570), (30, 939094), (38, 741390), (39, 722380), (52, 541785), (57, 494260), (60, 469547), (65, 433428), (76, 370695), (78, 361190), (95, 296556), (114, 247130), (130, 216714), (156, 180595), (190, 148278), (195, 144476), (228, 123565), (247, 114060), (260, 108357), (285, 98852), (380, 74139), (390, 72238), (494, 57030), (570, 49426), (741, 38020), (780, 36119), (988, 28515), (1140, 24713), (1235, 22812), (1482, 19010), (1901, 14820), (2470, 11406), (2964, 9505), (3705, 7604), (3802, 7410), (4940, 5703)]